Study on dispersibility of the tensile properties of composite laminate in large sample case

In order to study the dispersibility of the tensile properties, the tensile properties of 22 composite laminate samples are tested. The detail procedure is as follows. The tensile strength, the vertically and horizontally strain of the samples are tested in tensile process. Then the elastic modulus and Poisson s ratio of each sample are calculated. With statistical analysis, it s considered that log-normal distribution are the best function to simulate tensile strength and Poisson's ratio, and linear logistic model are the greatest one to simulate elastic modulus. At the end of the paper, the parameters of the dispersibility of the tensile properties of composite laminate are given.